Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11543
Title: Polycaprolactone-based shape memory segmented polyurethane fiber
Authors: Meng, Q
Hu, J 
Zhu, Y
Lu, J
Liu, Y
Keywords: Melting point
Phase separation
Polyurethanes
Stimuli-sensitive polymers
Issue Date: 2007
Publisher: John Wiley & Sons
Source: Journal of applied polymer science, 2007, v. 106, no. 4, p. 2515-2523 How to cite?
Journal: Journal of applied polymer science 
Abstract: In this article, shape memory polyurethane fibers were prepared by wet spinning. The shape memory switching temperature was the melting temperature of soft segment polycaprolactone phase at 36.20°C. The fibers' mechanical properties, especially the shape memory properties, were explicitly characterized and compared with that from some commercialized polyurethane elastic fibers. The prepared 40 denier shape memory fiber (SMF) had a tenacity of about 0.93-98 cN/dtex, and the strain at break ranged from 85-115%. At ambient temperature, the modulus of SMF was in general larger than those of the Elaspan and Newstar fibers. The SMF had a shape fixity ratio of more than 80% and recovery ratio more than 95% under thermal drawing and recovery cyclic tensile testing. The results from differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) were used to illustrate the mechanism governing the mechanical properties and shape memory effect especially.
URI: http://hdl.handle.net/10397/11543
ISSN: 0021-8995
EISSN: 1097-4628
DOI: 10.1002/app.26764
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